Question

what is the best estimate for the area of circle a in square units? use the approximation π = 3.14. a) 21.98 square units b) 43.96 square units c) 113.04 square units d) 153.86 square units. incorrect 2 tries left. please try again.

Explanation:

Step1: Determine the radius from the grid

Count the grid - squares to estimate the radius $r$ of the circle. Assume each grid - square is 1 unit. If we estimate the radius, say $r = 7$ units.

Step2: Use the circle - area formula

The formula for the area of a circle is $A=\pi r^{2}$. Substitute $\pi = 3.14$ and $r = 7$ into the formula: $A=3.14\times7^{2}=3.14\times49 = 153.86$ square units.

Answer:

D. 153.86 square units